Database Programming with JDBC and Java by George Reese

By George Reese

Java and databases make a robust mix. Getting the 2 aspects to interact, even though, takes a few effort--largely simply because Java offers in gadgets whereas so much databases do not.This publication describes the normal Java interfaces that make moveable object-oriented entry to relational databases attainable and provides a powerful version for writing functions which are effortless to take care of. It introduces the JDBC and RMI applications and makes use of them to increase three-tier purposes (applications divided right into a consumer interface, an object-oriented good judgment part, and a knowledge store). This publication is the major to changing into a better program developer for Java database courses. It contains reference listings for JDBC and crucial RMI sessions and covers Java 1.1.The publication starts off with a short assessment of SQL for builders who can be requested to deal with a database for the 1st time. It then explains the right way to factor database queries and updates via SQL and JDBC. It additionally covers using saved systems and different measures to enhance potency, the place those are available.But the book's key contribution is a suite of styles that separate the a variety of features of the Java program and facilitate the expansion and upkeep of an program. styles enable isolation of serious projects like item construction, info garage and retrieval, and the committing or aborting of transactions. The ebook additionally introduces RMI as a strategy to distribute items between structures. All ideas are illustrated with operating examples.

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Actual historical values are not stored on the operational system nor derived by adding or subtracting transaction values against the latest balance. Instead, historical data are loaded and integrated with other data in the warehouse for quick access. To Slice and Dice Through Data As stated earlier in this chapter, dynamic reports allow users to view warehouse data from different angles, at different levels of detail. Business users with the means and the ability to slice and dice through warehouse data can actively meet their own information needs.

Data knowledge. It is critical that business users be familiar with the contents of the data warehouse before they make use of it. In many cases, this requirement entails extensive communication on two levels. First, the scope of the warehouse must be clearly communicated to properly manage user expectations about the type of information they can retrieve, particularly in the earlier rollouts of the warehouse. Second, business users who will have direct access to the data warehouse must be trained on the use of the selected front-end tools and on the meaning of the warehouse contents.

The differences are chiefly influenced by ● the current state of technology within the enterprise; ● the culture of the organization in terms of decision-making styles and attitudes towards technology; and ● the company's position in its chosen market vs. its competitors. The effect of data warehousing on the tactical and strategic management of an enterprise is often likened to cleaning the muddy windshield of a car. It is difficult to quantify the value of driving a car with a cleaner windshield.

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